摘要
为水稻科学施肥提供理论论据。设计不同施肥组合观测水稻的生长动态和穗粒结构。不同施肥处理对总茎蘖数的影响非常明显。在其他条件相同的情况下,高峰苗数随氮肥的增加而快速增加,随磷肥的增加呈直线下降,钾肥与高峰苗数为非线性关系,叶面积系数与施氮量几乎呈直线关系,氮、磷、钾科学搭配可以取得理想的生长状态。氮肥对提高有效穗数是最重要的。在氮、钾肥一定的前提下,产量随着P2O5的增加而快速增加;在氮磷肥施用量完全相同的情况下,产量随着K2O的增加而增加。N=232.50 kg/hm2、P2O5=75.00 kg/hm2、K2O=150.00 kg/hm2是科学合理的组合。
The objective of the research was to provide theoretical basis for scientific fertilization of rice. Different fertilization combinations were designed to observe the growth dynamic and spike-grain structure of rice. The effects of different fertilization treatments on total tiller number were very obvious. Under the circumstance that the other conditions were same, the peak tiller numbers rapidly increased along with N fertilizer increasing and decreased linearly along with P fertilizer increasing. K fertilizer had nonlinear relationship to the peak seedlings number and the leaf area coefficient nearly performed line relationship to N fertilization. Scientific collocation with N, P and K could obtain perfect growth state. Nitrogenous fertilizer was the most important for increasing effective spikes. On the premise of constant N and K fertilizers, the yield increased rapidly along with P2O5 increasing. When the application mount of N and P fertilizers were completely same,the yield increased along with K2O increasing.The combination with 232.50 kg/hm^2 N,75.00 kg/hm^2 P2O5 and 150.00 kg/hm^2 K2O was scientific and reasonable.
出处
《安徽农业科学》
CAS
北大核心
2007年第27期8581-8585,8627,共6页
Journal of Anhui Agricultural Sciences
基金
江苏省社会发展项目(BS2006554)
关键词
施肥
水稻
生长动态
穗粒结构
Fertilization
Rice
Growth dynamic
Spike-grain structure
